Translation of perpetuate in Spanish

In the end we went up to the tower. We have never climbed so steep stairs ever before and once up we were really afraid to go down. There were no safety installation at this tower.
We stayed in this place for quite a while as it was the most spectacular place we have visited so far. It was unbelievable how much thought was put into construction of these magnificent sites.
Thanks a lot for the correction, they are very helpful and so are you in general. As I mentioned earlier I need more practice to write entire sentences in French and it takes a lot of time.